09-10-2020, 09:01 AM | #67 |
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Do we have an aftermarket option for a flywheel/clutch? I received this response from Steve Kaminski at XClutch when I inquired about their organic twin disc options for the 340:
“We are checking on the fitment. The OEM parts would work however our flywheel is slightly different than the OEM flywheel. There is a locating dowel on the crankshaft for the flywheel. The locating dowel for 335i and your 340ix are slightly offset. The OEM flywheel has a oval hole and is why you can use an OEM flywheel and clutch from the 335i, however the locating dowel hole on our flywheel is where the 335i so our flywheel will not fit directly onto your engine without modification. Engineering checking on how we can make this accommodation to suit both applications.“ |
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09-10-2020, 03:23 PM | #68 | |
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11-19-2020, 06:36 PM | #69 |
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I'm looking to go BM3 stage 2 w/ a catted DP – but on 91 CA gas. From what I've seen it should end up around ~400whp. You guys think I'd have issues w/ the stock F30 clutch slipping?
I'd rather not upgrade the clutch if I can help it (I'd rather just stick to stage 1 in that case). Or maybe a CDV delete like RedLeather recommended would be sufficient? |
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11-19-2020, 07:36 PM | #70 | |
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Instagram- f30_luca
Modifications: Custom E50 Tune by David Shoup, B58TU Fuel Pump, Armytrix Exhaust, VRSF downpipe, Big Boost Charge pipe/bov kit, CTS intake, H&R Springs/B8 Struts, 335is Clutch Upgrade |
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11-20-2020, 07:44 AM | #71 |
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I think it varies on a case by case basis. My car had 25k miles when I went stage 2 (93 octane) and my clutch started slipping almost immediately so I went with the 550i clutch
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11-20-2020, 08:06 AM | #72 | |
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11-20-2020, 08:07 AM | #73 |
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Hmm I don't know that doesn't sound like it from the tune cause I was fbo custom tune making more power than ots maps and my clutch had no problem at 68k miles yours was probably an isolated issue.
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11-20-2020, 10:27 AM | #74 | |
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Current: 2015 Alpine White over Coral Red M-Sport 6MT 335i (EWG) - VRSF 5" High Density FMIC / VRSF Charge Pipe / VRSF Catless Downpipe / Borla ATAK / Pipercross Filter / MHD OTS Stage 2 95 Octane / BMS Spacers - 15mm front; 18mm rear - OE 442M wheels/ Rolls Royce Door Chimes / Bang & Olufsen DSP settings for H/K
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11-20-2020, 11:40 AM | #75 | |
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I guess I'm just confused as I see some getting slippage with far more modest upgrades, but I guess it depends case-case on clutch health, driving habits etc. How many miles are on your car? |
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11-20-2020, 11:53 AM | #76 | ||
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My guess in the variability is also different driving habits. Different people driving manuals differently from the other.
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Current: 2015 Alpine White over Coral Red M-Sport 6MT 335i (EWG) - VRSF 5" High Density FMIC / VRSF Charge Pipe / VRSF Catless Downpipe / Borla ATAK / Pipercross Filter / MHD OTS Stage 2 95 Octane / BMS Spacers - 15mm front; 18mm rear - OE 442M wheels/ Rolls Royce Door Chimes / Bang & Olufsen DSP settings for H/K
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11-20-2020, 12:42 PM | #77 | |
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Curious to know: under what conditions does the clutch start to slip for those that have had the issue? When you're really flooring it through the gears? Or even under normal acceleration? And similarly for those that have deleted the CDV where have you seen the biggest improvement? Just trying to understand how much of an impact the CDV delete would have on me. I'd love to go stage 2 w/ a DP but the last thing I want to do right now is replace the clutch. Maybe I should play it safe and go stage 1 w/ DP for now? |
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11-20-2020, 12:48 PM | #78 |
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Most people are having clutch slip at the stage 2 E30 level. I'd guess the stage 2+ 93 map puts out a similar amount of torque. It might not slip right away, but people begin having issues after some hard driving (maybe a few months).
It does depend on your driving style. If you have a habit of shifting fast and doing a lot of pulls, it will not hold as well as if you're just daily driving. But our clutch is the same clutch that e9x 335i guys had, so there's plenty of data out there to show it can't hold much over 480-500wtq. |
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12-27-2020, 11:28 AM | #79 |
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Glad to have found this information. Got the Drivetrain Malfunction code 2 weeks ago when driving one night (cold outside; not sure if that matters too much). The 2 clutch codes popped up, and cleared them last week. Got the codes again last night (again, cold outside; may be coincidental). The car 'over rev's between gears in higher load situations. 'Normal' driving is good. So, I guess it's time for the 550i clutch? Been running stage 1 BM3 93 oct tune since July.
*Ignore my signature. Waiting to get a clutch to go stage 2 with DP*
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6 spd MT; THP; H & R Sport Springs; 437M wheels; VRSF 4.5" catless DP; BMS intake; BM3 Stage 2 93 oct tune
Last edited by Avodka14; 12-28-2020 at 12:46 PM.. |
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12-28-2020, 03:07 PM | #80 | |
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12-28-2020, 07:53 PM | #81 | |
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SOLD: 2016 340i xDrive 6-speed DAW v2.5 turbo E40 | Dorch S2 | VRSF DP | MST intake | AWE catback | 335is clutch | CSF heat exchanger | RK Autowerks intake manifold | Orange M Perf Brake Kit | KW Street Comfort coilovers | GTS taillights V2 |
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12-29-2020, 09:12 AM | #82 |
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12-29-2020, 06:15 PM | #83 | |
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I like your dyno numbers! Your car must roll with the new age pony cars with that power and x drive!
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6 spd MT; THP; H & R Sport Springs; 437M wheels; VRSF 4.5" catless DP; BMS intake; BM3 Stage 2 93 oct tune
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12-30-2020, 01:20 AM | #84 |
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Adding another point of data for anyone looking here in the future. I got slipping after BM3 stage 1 around 55k miles. I was pretty shocked how early and what power levels caused it. I upgraded to the 550i clutch as well and fortunately the flywheel didn't need to be replaced.
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12-30-2020, 11:24 PM | #86 |
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No WOT for a few hundred miles. My mechanic said 1k or 2k miles, but fuck that lmao. I got people to race.
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SOLD: 2016 340i xDrive 6-speed DAW v2.5 turbo E40 | Dorch S2 | VRSF DP | MST intake | AWE catback | 335is clutch | CSF heat exchanger | RK Autowerks intake manifold | Orange M Perf Brake Kit | KW Street Comfort coilovers | GTS taillights V2 |
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12-31-2020, 04:53 PM | #87 |
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Haha.
Got the 550i clutch and cdv delete at same time. Got a problem. On cold start, the clutch engagement point is low, and engagement is grabby. Once warm, the engagement point rises like an inch and engagement becomes softer. What's going on?
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01-03-2021, 02:50 AM | #88 |
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Hard to say. Maybe try bleeding again, and make sure there aren't any leaks in the clutch line.
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